Global patent index - EP 1024298 A3

EP 1024298 A3 2001-01-10 - Hydraulic unit with variable system pressure

Title (en)

Hydraulic unit with variable system pressure

Title (de)

Hydraulikaggregat mit veränderbarem Systemdruck

Title (fr)

Ensemble hydraulique avec pression de système variable

Publication

EP 1024298 A3 (DE)

Application

EP 00100391 A

Priority

DE 19903404 A

Abstract (en)

[origin: EP1024298A2] The system pressure is adjusted by simultaneously operating a pressure limiting valve (2) on the pressure generator side and a press switch on the pressure consumer side. All system pressured detected by a pressure sensor (3) are signalled to a microcontroller (5). The system pressure at the pressure limiting valve is set using a positionable adjustment element (12) having a position switch (10) which signals to the microcontroller the start of the adjustment process. A check valve in the consumer-side pressure line (8) is simultaneously unblocked to create a uniform pressure between the pressure generator side and the pressure consumer side.

IPC 1-7 (main, further and additional classification)

F15B 11/028; F15B 21/08; G05D 16/20

IPC 8 full level (invention and additional information)

F15B 11/028 (2006.01); F15B 21/08 (2006.01); G05D 16/20 (2006.01)

CPC (invention and additional information)

F15B 11/028 (2013.01); F15B 21/087 (2013.01); G05D 16/2066 (2013.01); F15B 2211/20515 (2013.01); F15B 2211/20538 (2013.01); F15B 2211/25 (2013.01); F15B 2211/30515 (2013.01); F15B 2211/50536 (2013.01); F15B 2211/5151 (2013.01); F15B 2211/55 (2013.01); F15B 2211/6309 (2013.01); F15B 2211/6653 (2013.01); Y10T 137/2622 (2015.04); Y10T 137/8326 (2015.04)

Citation (search report)

  • [A] DE 29808294 U1 19980813 - HEILMEIER & WEINLEIN [DE]
  • [A] PATENT ABSTRACTS OF JAPAN vol. 1995, no. 06 31 July 1995 (1995-07-31)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 005, no. 185 (P - 091) 25 November 1981 (1981-11-25)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1024298 A2 20000802; EP 1024298 A3 20010110; EP 1024298 B1 20040407; AT 263928 T 20040415; DE 19903404 A1 20000803; US 6273686 B1 20010814

INPADOC legal status

2011-03-31 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IT

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20100108

2010-11-30 [PG25 AT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: AT

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20100108

2010-10-29 [PG25 CH] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: CH

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20100131

2010-10-29 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FR

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20100201

2010-10-29 [PG25 LI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: LI

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20100131

2010-10-22 [REG FR ST] NOTIFICATION OF LAPSE

- Ref Legal Event Code: ST

- Effective date: 20100930

2010-08-31 [REG CH PL] PATENT CEASED

- Ref Legal Event Code: PL

2009-10-30 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: DE

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20090801

2009-10-30 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: FR

- Ref Legal Event Code: PGFP

- Payment date: 20090120

- Year of fee payment: 10

2009-08-31 [PGFP IT] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: IT

- Ref Legal Event Code: PGFP

- Payment date: 20090124

- Year of fee payment: 10

2009-06-30 [PGFP CH] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: CH

- Ref Legal Event Code: PGFP

- Payment date: 20090126

- Year of fee payment: 10

2009-04-30 [PGFP AT] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: AT

- Ref Legal Event Code: PGFP

- Payment date: 20090122

- Year of fee payment: 10

2008-05-30 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Ref Legal Event Code: PGFP

- Payment date: 20080131

- Year of fee payment: 9

2008-01-02 [PG25 PT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: PT

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20040907

2007-12-31 [BERE] BE: LAPSED

- Owner name: LUDWIG *EHRHARDT G.M.B.H.

- Ref Legal Event Code: BERE

- Effective date: 20050131

2005-09-30 [REG CH AEN] MODIFICATION OF THE SCOPE OF THE PATENT

- Ref Legal Event Code: AEN

- Free Format Text: DAS PATENT IST AUFGRUND DES WEITERBEHANDLUNGSANTRAGS VOM 07.09.2005 REAKTIVIERT WORDEN.

2005-09-15 [REG CH PL] PATENT CEASED

- Ref Legal Event Code: PL

2005-07-31 [BERE] BE: LAPSED

- Owner name: LUDWIG *EHRHARDT G.M.B.H.

- Ref Legal Event Code: BERE

- Effective date: 20050131

2005-03-30 [26N] NO OPPOSITION FILED

- Ref Legal Event Code: 26N

- Effective date: 20050110

2005-01-31 [PG25 BE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: BE

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20050131

2005-01-31 [PG25 LI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: LI

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20050131

2005-01-31 [PG25 MC] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: MC

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20050131

2005-01-08 [PG25 LU] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: LU

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20050108

2005-01-08 [PG25 CY] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: CY

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20050108

2004-12-01 [REG IE FD4D] EUROPEAN PATENTS DESIGNATING IRELAND TREATED AS ALWAYS HAVING BEEN VOID

- Ref Legal Event Code: FD4D

2004-11-12 [ET] FR: TRANSLATION FILED

- Ref Legal Event Code: ET

2004-10-06 [GBV] GB: EP PATENT (UK) TREATED AS ALWAYS HAVING BEEN VOID IN ACCORDANCE WITH GB SECTION 77(7)/1977

- Ref Legal Event Code: GBV

- Effective date: 20040407

2004-10-01 [NLV1] NL: LAPSED OR ANNULLED DUE TO FAILURE TO FULFILL THE REQUIREMENTS OF ART. 29P AND 29M OF THE PATENTS ACT

- Ref Legal Event Code: NLV1

2004-07-07 [PG25 DK] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: DK

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040707

2004-07-07 [PG25 GR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: GR

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040707

2004-07-07 [PG25 SE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: SE

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040707

2004-05-19 [REG IE FG4D] EUROPEAN PATENTS GRANTED DESIGNATING IRELAND

- Ref Legal Event Code: FG4D

- Free Format Text: GERMAN

2004-05-13 [REF] CORRESPONDS TO:

- Ref Legal Event Code: REF

- Ref Document Number: 50005946

- Country of Ref Document: DE

- Date of Ref Document: 2004-05-13

- Kind Code of Ref Document: P

2004-04-15 [REG CH EP] ENTRY IN THE NATIONAL PHASE

- Ref Legal Event Code: EP

2004-04-07 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2004-04-07 [REG GB FG4D] EUROPEAN PATENT GRANTED

- Ref Legal Event Code: FG4D

- Free Format Text: NOT ENGLISH

2004-04-07 [PG25 ES] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: ES

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040407

2004-04-07 [PG25 FI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FI

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040407

2004-04-07 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: GB

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040407

2004-04-07 [PG25 IE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IE

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040407

2004-04-07 [PG25 NL] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: NL

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 20040407

2004-04-07 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: LUDWIG EHRHARDT GMBH

- Ref Legal Event Code: RAP1

2001-09-26 [AKX] PAYMENT OF DESIGNATION FEES

- Ref Legal Event Code: AKX

- Free Format Text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-04-11 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20010214

2001-01-10 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-01-10 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: AL;LT;LV;MK;RO;SI

2001-01-10 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- Free Format Text: 7F 15B 11/028 A, 7F 15B 21/08 B, 7G 05D 16/20 B

2000-08-02 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-08-02 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: AL;LT;LV;MK;RO;SI